Go Back   DisplayLink Forum > DisplayLink Graphics Technology > Mac Software

Thread Tools Search this Thread Display Modes
Old 01-17-2018, 10:23 PM   #1
Junior Member
Join Date: Jan 2018
Posts: 2
Default Very bad ethernet performance


I've just got my new usb3 dock:


  Product ID:	0x4307
  Vendor ID:	0x17e9  (DisplayLink (UK) Ltd.)
  Version:	41.89
  Serial Number:	U3D2338603657
  Speed:	Up to 5 Gb/sec
  Manufacturer:	DisplayLink
  Location ID:	0x14540000 / 12
  Current Available (mA):	900
  Current Required (mA):	504
  Extra Operating Current (mA):	0
I'm running it with latest DisplayLink driver on the following system:

System Software Overview:

  System Version:	macOS 10.13.2 (17C205)
  Kernel Version:	Darwin 17.3.0

  Model Name:	MacBook Pro
  Model Identifier:	MacBookPro11,2
  Processor Name:	Intel Core i7
  Processor Speed:	2 GHz
  Number of Processors:	1
  Total Number of Cores:	4
  L2 Cache (per Core):	256 KB
  L3 Cache:	6 MB
  Memory:	8 GB
  Boot ROM Version:	MBP112.0142.B00
  SMC Version (system):	2.18f15
In general it works fine, though ehternet speed according to speedtest.net, fast.com and iperf with a server within my local network is capped by 30.5 Mbit/sec.

It's definitely a bug somewhere in DL hardware or software because when I connect a 3rd party gigabit usb ethernet dongle to a port on my DL dock I'm getting 250Mbit on speedtest/fast.com and 400Mbit over local network.

Could you help me with that please?.. In general it's nice piece of hardware but network performance is awful.
pauls is offline   Reply With Quote
Old 01-30-2018, 05:54 AM   #2
Mac Team
Join Date: Feb 2009
Posts: 606


This is a known issue with DL-3xxx and DL-5xxx devices actually.
The built-in macOS Ethernet driver is very inefficient with those devices. We receive sporadic reports about this issue and never got Apple to analyse this issue unfortunately.

The issue is not visible with any other driver we tried on the platform or other platforms, including our own driver that we used to ship before Apple provided the inbox driver in macOS. Also, DL-6xxx devices are not affected.

We have bug #31218016 open with Apple about this, our internal reference is #25056. If you experience this issue, you could raise a bug with Apple too to increase its priority.

Carlo is offline   Reply With Quote
Old 01-30-2018, 08:30 PM   #3
Junior Member
Join Date: Jan 2018
Posts: 2


thank you for the reply.

Is it possible to use your driver somehow?..
pauls is offline   Reply With Quote
Old 02-09-2018, 01:59 PM   #4
Junior Member
Join Date: Feb 2018
Posts: 1
Default Getting huge network errors with my Dell D6000

First time using this thing and noticed the network appeared to be lagging and sluggish. I pulled up the Network Utility and seeing all kinds of send errors. Doing an internet speed test, the send errors skyrocketed to over 30,000 for instance. I ruled out the cable, switch port and dock as being an issue. Other than that, everything appears fine.
turboted is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT. The time now is 03:54 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2021, vBulletin Solutions, Inc.